Unit 1 Exam: Computational Thinking

Which of the following algorithms will successfully cause the robot to trace out a square-shaped path, with the robot ending up in its original position and facing in its original direction?

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2. Which of the following solutions would allow these ice cream peddlers to find the customers' chosen flavors the most efficiently?

• Organize the tubs alphabetically by flavor name and use a sequential search algorithm to find the customer's requested flavor.

• Organize the tubs according to Olaf's preferences and use a sequential search algorithm to find the customer's requested flavor.

• Organize the tubs according to Olaf's preferences and use a binary search algorithm to find the customer's requested flavor.

• Organize the tubs alphabetically by flavor name and use a binary search algorithm to find the customer's requested flavor.

3. Which of the following types of languages is optimized for machine processing and may be written and expressed as a series of binary digits (e.g., ones and zeros), making it difficult for humans to read and write?

• Natural language

• Pseudocode

• High-level programming language

• Low-level programming language

4. Which of the following encoded ciphertext strings decodes to an original plaintext message of "secret"?

• etsecr

• wigvix

• kwujwl

• oaynap

5. Which of the following best describes the need for using cryptography in data communications?

• Cryptography allows data to be sent over the internet.

• Cryptography ensures data is decipherable by the recipient, but not accessible by a third party

• Cryptography prevents third parties from accessing personal accounts.

• Data is easier to access when it is encrypted.

6. According to Moore’s Law, increases in technological performance should approximately double every year. If this holds true, how much can performance be expected to increase over 5 years?

• 10 times as much

• 100 times as much

• 32 times as much

• 16 times as much

7. Which of the following is a good practice to prevent your password from being vulnerable to attacks?

• Always use the same passwords across different sites so that you can easily remember them.

• Make sure to follow the links provided in emails to help you reset your passwords.

• Use simple passwords that use basic words and important numbers like your birthday.

• Create your passwords based on some algorithm that helps generate a password that uses a combination of letters, numbers and symbols.

8. If score starts out as 10 at the beginning of a program, according to the following flowchart, what will score be at the end?

• 10

• 10.5

• 11

• 13.5

9. What kind of flow pattern is represented by this portion of a larger flowchart?

• Sequence

• Selection

• Iteration

• Sorting

10. Which of the following is part of the CIA Triad?

• Communication

• Attention

• Integrity

• Association